Sorry to be a pain Letsby but, I've put this onto an FTL sheet and cannot make it work - especially for anyone finishing after 0300 and all variations end up with only 7 days off in 28 rather than the minimum 8 required. Also, I can't make it work with 3 pilots over a regular 21 day period which is what a 4-3-4-3-4-3 should end up with. Instead, it very quickly ends up with 2 pilots on night shift on the same day or someone doing night shift straight into a day shift - Can somebody please explain??